Link following in Microsoft Malware Protection Engine - CVE-2026-50656

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Main Vulnerability Database Vulnerabilities #VU135026

Link following in Microsoft Malware Protection Engine - CVE-2026-50656

Published: June 22, 2026


Vulnerability identifier: #VU135026
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-50656
CWE-ID: CWE-59
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Microsoft
Affected software:
Microsoft Malware Protection Engine

Detailed vulnerability description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to an insecure link following issue. A local user can create a specially crafted symbolic link to a critical file on the system and overwrite it with privileges of the application.

Note, the vulnerability was dubbed "RoguePlanet".


How to mitigate CVE-2026-50656

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Sources